a) You are provided with a stock solution of 0.1M imidazole. Make the appropriate dilution with water to make (50mL of 0.01M imidazole in a clean conical flask. Calculate the AMOUNT of imidazole in mmol in the flask. (Note: The same conical flask can be used for all titration experiments. Just rinse with deionised water before reusing.)
Q: Suppose solute A has a distribution coefficient of 1.0 between water and diethyl ether. Demonstrate…
A: Distribution coefficient , K = Concentration of solute in organic phase Concentration of solute in…
Q: Approximately 1.0 g of caffeine will dissolve in 28 mL of methylene chloride and in 46 mL of water.…
A:
Q: he separation and purification processes given below and the method used against them are given.…
A: The different products that can be extracted from a given compound can be of varying nature and…
Q: The sample is dissolved in a mixture containing 10ml of distilled water and 20 ml of dilute…
A:
Q: 1. Which of the following can most likely increase the yield of recrystallized benzoic acid? a. A…
A: Recrystallization is the process of purification of a compound in its purest form by separating the…
Q: Nitrous acid-observation is gas bubbles Hinsberg test-obsersvation is one layer. THen acid is added…
A: Hinsberg test is a chemical test used to distinguish between primary, secondary and tertiary amines.…
Q: For which titration is phenolphthalein the best choice? Explain your reasoning and support with…
A: Titration is a technique in which a solution of known concentration is treated with a solution of…
Q: A 35 year old male was taken to the hospital with excruciating pain in the lower abdominal area. It…
A:
Q: Nitrous acid-observation is gas bubbles Hinsberg test-obsersvation is one layer. THen acid is added…
A: Hinsberg test is a chemical tes used to distinguish between primary, secondary and tertiary amines.…
Q: In the lab, Annie mixed 2.5 g of the benzoic acid with 10.00mL of 1.000M NaOH and diluted to 100mL.…
A: The reaction of an acid with a base will result in the formation of salt and water. For example, the…
Q: A mixture of sodium carbonate and sodium bicarbonate is dissolved in water and treated with 0.100 M…
A: For the mixture of Sodium Carbonate and Sodium bicarbonate With Phenolphthalein end point, the…
Q: -sodium chloride-congo red, btained when the filtrate is allov
A: We know that, Recrystallization is the process in which deformed grains of the crystal structure are…
Q: please Answer all four parts Chemistry 1. The name of the equipment used to separate 2 immiscible…
A: 1) The name of the equipment used to separate 2 immiscible phases by extraction is separating…
Q: Describe why the inside wall of the flask is rinsed with deionized water during accurate titration.…
A: During accurate titration we need to rinse the inside wall of the flask with de-ionized water…
Q: A solid chloride sample weighing 0.09969 g required 18.25 mL of 0.05205 M AGNO3 to reach the…
A:
Q: What weight of the soda ash (impure Na2CO3) should be taken for analysis in order that the number of…
A: 1 mol Na2CO3 (or CO3 2-(aq)) reacts with 2 moles of acid H+(aq). The balanced equation is: CO3…
Q: Calculate the solubility for N-Phenylsuccinimide at 152 to 154 melting point with 1 g?
A:
Q: During the mixing step, briefly discuss why gentle mixing of the solution is necessary after the…
A: For efficient and effective water treatment, gentle mixing of the solution is necessary after…
Q: The distribution constant for iodine between an organic solvent and water is 75. Find the…
A: Given the distribution constant, KD = 75 Volume of aqueous layer(water), Vaq = 100 mL molarity of…
Q: An analyte has a Rf value of 0.5. What does that say about the solubility of the analyte in the…
A: As we know, Rf value is nothing but ratio of distance travelled by solute to distance travelled by…
Q: What are in the distillate collected from the distillation?
A: (1) A receiver
Q: What is the minimum distribution constant that permits removal of 99% of a solute from 50.0 mL of…
A: Distribution law gives information about the partition of a solute between two immiscible phases as…
Q: A student trying to determine if a white solid is a true hydrate heats the sample and finds that…
A: White solid is heated and it resulted in evolution of H2O. The anhydrous residue obtained waa…
Q: When performing the extraction process for eugenol, what are the most common problems that can be…
A: Ans. Two most common problems in extraction process for eugenol: (i) Eugenol does not extract from…
Q: FeCl3 and MgCl2 solution was prepared by dissolving FeCl3 (AR) and MgCl2 (AR) in distilled water.…
A: Hydrolysis is a process in which the compound reacts with water. The required compound in this given…
Q: Calcium Iodideand Sodium Oxalate may have led to the pain that the patient was experiencing.…
A: In this case, it is mentioned that the substances calcium iodide and sodium oxalate are present as…
Q: What weight of sample must be used in the Mohr method for chloride so that two times the volume of…
A: Here we have to determine the mass of sample used in Mohr's method for chloride if the volume of…
Q: Why is there no data for the mixture of 20.0 mL of silver nitrate with 0.0 mL. of sodium fluoride,…
A: In this question , sodium fluoride and silver nitrate react to form a precipitate. The question is…
Q: a = Most organic compounds like sugar and table salt are soluble in organic solvents like water and…
A: a and c both are correct.
Q: You are employed as a coop student at the Drug and Alcohol Testing Association of Canada (DATAC)…
A:
Q: What sample size should be taken
A: Na2CO3+2HCl(excess) =H2CO3+2NaCl+HCl(remains) remain HCl+NaOH=NaCl+H2O
Q: You are purifying a protein for the first time. You have solubilized it with homogenization in a…
A: From literature, we can know how many grams of ammonium sulfate [(NH4)2SO4] to add to get a certain…
Q: A solution contains 1.33x10 M silver acetate and 1.11×10 M barium nitrate. Solid ammonium phosphate…
A: A precipitation reaction refers to the formation of an insoluble salt when two solutions containing…
Q: ) When considering the overall dialysis procedure, why is it important to exchange old/used dialysis…
A: Since you have asked multiple questions, we have solved the first question for you. If you want any…
Q: A 35 year old male was taken to the hospital with excruciating pain in the lower abdominal area. It…
A: Since you have posted a question with multiple sub parts, we will solve only first three subparts…
Q: In glucose estimation using Benedict's Reagent, justify the necessity of continuously heating the…
A:
Q: If a mixture is distilled rapidly, the separation of its compound is poorer than if the mixture is…
A: The correct answer is given below
Q: A 35 year old male was taken to the hospital with excruciating pain in the lower abdominal area. It…
A: Hi there, as there are multiple questions posted. We are answering the first 3 sub-parts. if you…
Q: Find how many % of I2 in 1000 mL H2O will still be in its aqueous phase if it was extracted with…
A: For environmental, clinical, and industrial laboratories, liquid–liquid extraction is an effective…
Q: Which of the following is FALSE? a. In the extraction of caffeine, caffeine was dissolved in the…
A: To determine which of the following statement is FALSE a. In the extraction of caffeine, caffeine…
Q: he analgesic aspirin is soluble at 25oC in water to the extent of 3mg/mL and in ethylacetate to the…
A: Distribution coefficient is the indicator of how a substance distributes itself in a liquid-liquid…
Q: Please answer it ASAP and CORRECTLY for an upvote. Thank you. Benzoic acid is 9 times more soluble…
A: 13. Benzoic acid 9 times more soluble in chloroform than in water y = 9x If 1mole of benzoic acid…
Q: A 35 year old male was taken to the hospital with excruciating pain in the lower abdominal area. It…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: One of the components of nutmeg is an organic compound, Trimiristin, A. To extract this compound…
A: One of the components of nutmeg is an organic compound, Trimiristin, A. To extract this compound…
Q: pLease help with all parts.
A: Step 1: To prepare a stock solution the molarity can be taken as: M1: molarity…
Q: The purpose of adding sodium sulfate in the extraction is to decrease the solubility of caffeine in…
A: Given question is : The purpose of adding sodium sulfate in the extraction is to decrease the…
Q: An analyte has a Rf value of 1. What does that say about the solubility of the analyte in the…
A: As we know Rf value is nothing but ratio of distance travelled by solute to distance travelled by…
Step by step
Solved in 2 steps with 2 images
- Compute for the needed values for slution preparation: 1. Prepare the following solution quantitatively using boiled distilled water per group:250.0 mL 0.0500 M standard HCl solution from 1.0 M HCl 2. a. 500.0 mL 0.1000 M stock EDTA solutionb. 100.0 mL 0.0500 M stock Ca2+ solutionFeCl3 and MgCl2 solution was prepared by dissolving FeCl3 (AR) and MgCl2 (AR) in distilled water. Secondly, under rapid stirring, NaHCO3 powder was slowly added to the above solution to the desired basicity (B = 1) which had been proved to be the optimal B for turbidity removal. Thirdly, Na2HPO4 (AR) was added to the PFMC solution as a stabilizer ([Na2HPO4]/([Fe] + [Mg]) = 0.08). i. The the chemical equation of the Synthesis. ii How much weight need to put NaHCO3 above solution the desired basicity (B=1) iii. How much weight need to put Na2HPO4 on PFMC solution refering ([Na2HPO4]/([Fe] + [Mg]) = 0.08).https://www.youtube.com/watch?v=jDgSohKVLio Compare the results obtained when soap solution was added to the permanent hard water treated with sodium carbonate with that obtained when it was added to the untreated permanent hard water. Compare the amount of bubbles and precipitate formed.
- Please determine how to make a working standard Solution of about 0.010mg/mL. Caffeine will be the active. Diluent will be water.Note: Part A is already sovled. The ppm values of ions are presented on a tablePLEASE USE ANOTHER SOLUTION. WRITE ALL THE PROCESS. What is the minimum distribution constant that permits removal of 99% of a solute from 50.0 mL of water with five 10.0-mL extractions with toluene?
- One of the components of nutmeg is an organic compound, Trimiristin, A. To extract this compound from nutmeg why we need to choose as a solvent, ether, and not acetone?B. Is it possible to choose water as an exhaustive solvent of Trimiristin?a) When considering the overall dialysis procedure, why is it important to exchange old/used dialysis buffer (or “dialysate” solution) with a fresh dialysis buffer solution at least once throughout the process? NOTE: Your TAs will do this for your group’s samples over the next week. b) This week’s lab utilizes a dialysis buffer with the following composition: 10 mM Tris-HCl, 10 mM MgSO4, and a pH of 7.4. Let’s presume an ERROR occurred with the creation of this buffer during the pH titration and you unknowingly titrated to a final pH of 5.0. What effects, if any, could you expect to observe on your final, dialyzed sample?A sample is known to contain about 20% soda ash. What sample size should be taken for analysis, if it is to be dissolved into a 50 mL volumetric flask, with 10 mL aliquots analyzed, if it is desired that the analysis consume a total of 40 mL 0.10 M HCl with 10 mL of 0.10 M NaOH used in the back-titration, after boiling.
- How much 1.0 M sodium bicarbonate solution (in mL) is needed to stoichiometrically react with 25 mL of 4.5% (w/v) acetic acid? Molecular weight of sodium bicarbonate = 84.007 gmol, molecular weight of acetic acid = 60.052 g/mol please provide explanationThe separation and purification processes given below and the method used against them are given. Which or which of these pairings are correct? I. Brewing of tea - ExtractionII. Purification of water impurities - ChromatographyIII. Separating olive pomace from olive oil while producing olive oil-DecantationIV.Petroleum fractions obtaining - Ordinary distillationV. Obtaining essential oils and using them in perfume making - Water-steam distillationA. I, II, III, IVB. I, II, III, IV, VC. I, IV, VD. I, II, III, VE. I, II, VA student was careful to make and stir all of her standard solutions immediately before measuring their turbidity for her calibration curve. However, she let her tap water solutions sit for 10 minutes prior to measuring their turbidity. If she measured the top portion of the solution, would her experimental sulfate ion concentration be higher or lower than it should be?